§ 89.102-96 - Effective dates, optional inclusion.

(a) This subpart applies to all engines described in § 89.101-96 with the following gross power output and manufactured after the following dates:

(1) Greater than or equal to 37 kW but less than 75 kW and manufactured on or after January 1, 1998;

(2) Greater than or equal to 75 kW but less than 130 kW and manufactured on or after January 1, 1997;

(3) Greater than or equal to 130 kW but less than or equal to 560 kW and manufactured on or after January 1, 1996;

(4) Greater than 560 kW and manufactured on or after January 1, 2000.

(b) A manufacturer can optionally certify engines manufactured up to one calendar year prior to the effective date of mandatory certification to earn emission credits under the averaging, banking, and trading program. Such optionally certified engines are subject to all provisions relating to mandatory certification and enforcement described in this part.